Question: please show calculations on excel, please double check answer Derice 2 has a sinele backup systea witb identical reliability. Device 3 bas a single backep

please show calculations on excel, please double check answer

Derice 2 has a sinele backup systea witb identical reliability. Device 3 bas a single backep sysleat that has two sehcengposeats (each with a reliability of .40) that are consected in a beries. Derice 4 is backed up by two bachup systemh (cach with reliahility of .75). What is the liketiboed that these safety devices (werkine together) will preveet another divaver? Pleave shen all calculations

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